The molecular formula of aspartame, the artificial sweetenermarketed as NutraSweet®, is C14H18N2O5. (a) What is themolar mass of aspartame? (b) How many moles of aspartameare present in 1.00 mg of aspartame? (c) How many moleculesof aspartame are present in 1.00 mg of aspartame? (d) Howmany hydrogen atoms are present in 1.00 mg of aspartame?

Answer the following questions about acetylsalicylic cid, the active ingredient in aspirin. (a) The amount of acetylsalicylic acid in a single aspirin tablet is 325 mg, yet the tablet has a mass of 2.00g. Calculate the mass percent of acetylsalicylic acid in the tablet. (b) The elements contained in acetylsalicylic acid are hydrogen, carbon, and oxygen. The combustion of 3.000g of the pure compound yields 1.200 g of water and 3.72 L of dry carbon dioxide, measured at 750 mm Hg and 25 degrees Celsius. Calculate the mass, in g, of each element in the 3.000g sample. (c) A student dissolved 1.625 g of pure acetylsalicylic acid in distilled water and titrated the resulting solution to the equivalence point using 88.43 mL of 0.102 M NaOH(aq). Assuming that acetylsalicylic acid has only one ionizable hydrogen, calculate the molar mass of the acid.

(a) What is the mass, in grams, of 4.62  1023 molecules of aspirin, C9H8O4?  (b) What is the molar mass of diazepam (Valium(R)) if 0.05570 mol weighs 15.86 g?  g/mol (c) How many moles of ammonium ions are in 0.645 g of ammonium carbonate?

Ammonium phosphate fertilizer is prepared by the following reaction: 3NH3(g) + H3PO4(aq)  (NH4)3PO4(s) (a)  Calculate the molar mass of ammonia, phosphoric acid and ammonium phosphate. (b)  How many moles of ammonium phosphate are present in a 5.00-pounds bag of (NH4)3PO4? (c)  How many grams of ammonia and phosphoric acid, respectively, are required to produce 1.00 kg of (NH4)3PO4 if the reaction has 100% yield; (d)  How many kilograms (kg) of ammonia and phosphoric acid, respectively, are required to produce 1.00 kg of (NH4)3PO4 if the reaction has has 85.0% yield?

5. How many atoms in (use Avogadro's number. 6.02X1023 atomic (a) 2.82 mol of Zn (b) 1.5 mol of Cu 6. What is the molecular mass of (a) MgSO4 (b) K₂CO3 7. What is the percentage of Ag in AgNO3 8. The three colorless, odorless gases are H₂, O₂, and CO₂ What are their molar mass in g and how can you distinguish one from the other.. 9. What is the percent of Ca in CaHCO3

The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. a) What is the molar mass of the compound? Provide an answer to two decimal places. b) What is the percent by mass of carbon in the compound? c) What is the mass in grams of chlorophyll that are in 2.185 moles of the compound? d)What quantity in moles of chlorophyll are there in 2.185 grams of the compound?

Be sure to answer all parts. TCDD, also called dioxin (C H,Cl,O2, molar mass 322.0 g/mol), is a potent poison. The average lethal dose in humans is estimated to be 3.0 x 10- mg per kg of body weight. (a) How many grams constitute a lethal dose for a 91-kg individual? (b) How many molecules of TCDD does this correspond to? (a) X 10 g dioxin (b) x 10 molecules

If you have 2.00x10^12 atoms of an element and it weighs 3.94x10^-10g, answer the following questions:  (1) The molar mass of the element to one decimal place is what g/mol. (2) Based on your molar mass the chemical symbol for the element is ?

Mass of 0.1 mole of methane is (a) 1.6 g (b) 0.1 g (c) 1g (d) 16 g

(3)Galactose is found in milk sugar and is used for diagnosing liver function. What is the molecular formula of galactose if the empirical formula is CH₂O and the molar mass is 180 g/mol?